I participated in a webinar this week where they presented a Google Maps feature that covers a variety of natural disaster types of events. I'm not sure if this is something that could be incorporated directly into MM, or if it would be just a good reference for teams. Here is the link to the site, with the wildfires option selected. If you zoom in on the fire in Banning, CA it gives the estimated fire perimeter. There are lots of other options to play with as well.
http://www.google.org/crisismap/2013-us-wildfiresIf you move over to the fire in Ventura, not only does it show the fire perimeter, it also shows the evacuation order perimeter and that Pacific Coast Highway (a major evacuation corridor) is still open.